Finding the Third Proportional to 772,678 and 1,181,988

Step by Step Solution

1. Step 1: Write the proportion equation
   772,678 : 1,181,988 = 1,181,988 : x
2. Step 2: Convert to fraction form
   772,678/1,181,988 = 1,181,988/x
3. Step 3: Cross multiply
   772,678x = 1,181,988 × 1,181,988
4. Step 4: Simplify right side
   772,678x = 1,397,095,632,144
5. Step 5: Solve for x
   x = 1,397,095,632,144/772,678
6. Step 6: Final answer
   x = 1,808,121.41